How far is American Falls, ID from Twin Falls, ID?
The driving distance from American Falls, ID to Twin Falls, ID is about 88.3 miles (142.1 km), with a travel time of about 01h 21m by car.
- The straight-line flight distance is about 83 miles (133.6 km).
- For a round trip, plan for roughly 02h 43m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 01h 21m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Cassia County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between American Falls and Twin Falls.
Turn-by-Turn Driving Directions
Step-by-step road directions between American Falls and Twin Falls.
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1
Start on the route
53 m · 15 sec
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2
Turn right onto Fort Hall Avenue
2888 ft · 57 sec · Fort Hall Avenue
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3
Continue on Lincoln Street
2230 ft · 38 sec · Lincoln Street
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4
Continue on South Frontage Road
2 mi · 3 min · South Frontage Road
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5
Take the ramp right
1188 ft · 29 sec
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6
Merge slight left
36.4 mi · 34 min
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7
Continue on Vietnam Veterans Memorial Highway
39.1 mi · 37 min · Vietnam Veterans Memorial Highway
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8
Take the exit slight right toward ID 50: Kimberly, Twin Falls
2061 ft · 55 sec
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9
Turn left onto South 1150 East
147 m · 8 sec · South 1150 East
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10
Continue on ID 50
2676 ft · 35 sec · ID 50
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11
Continue on South 1150 East
1.1 km · 47 sec · South 1150 East
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12
Turn right onto East 3900 North Road
3.1 mi · 5 min · East 3900 North Road
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13
Continue on Addison Avenue East
3.9 mi · 7 min · Addison Avenue East
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14
Continue on Addison Ave East
1 mi · 2 min · Addison Ave East
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15
Turn left onto Shoshone Street East
55 m · 6 sec · Shoshone Street East
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16
Arrive at your destination
0 m · 1 sec · Shoshone Street East
Car Route Details
A richer read on the saved driving route between American Falls and Twin Falls.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Vietnam Veterans Memorial Highway
Continue on Vietnam Veterans Memorial Highway
39.1 mi · 00h 37m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving American Falls and Sunny near Twin Falls.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from American Falls to Twin Falls?
The road trip is about 88.3 miles (142.1 km) and usually takes 01h 21m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Declo is a useful midpoint, sitting about 44.1 miles from American Falls and 44.2 miles from Twin Falls.
How much longer is the road route than the straight-line distance?
The direct path is about 83 miles (133.6 km), while the road route adds roughly 5.3 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 3:46 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.11 one way or $24.21 round trip. Estimated CO2 is about 27.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around American Falls and Sunny near Twin Falls.
Stop Ideas Near Declo
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Declo.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between American Falls and Twin Falls. Straight-line distance: 83.05 mi (133.65 km).
#1 American Falls
City in Idaho
| Population | 4,315 |
| Coordinates | 42.7860200, -112.8544400 |
| Altitude | 1343 |
| Country | United States |
#2 Twin Falls
The most populous city in Twin Falls County, Idaho.
| Population | 50,197 |
| Coordinates | 42.5629700, -114.4608700 |
| Altitude | 1138 |
| Country | United States |
End: Shoshone Street East (-114.460704, 42.56285)
Estimated Travel Time
Distance: 142 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 56m |
| 40 mph (64.37 km/h) | 02h 12m |
| 50 mph (80.47 km/h) | 01h 45m |
| 60 mph (96.56 km/h) | 01h 28m |
| 70 mph (112.65 km/h) | 01h 15m |
| 80 mph (129 km/h) | 01h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $12.11 | $24.21 |
| Mid-grade | $4.23 | $13.16 | $26.32 |
| Premium | $4.55 | $14.15 | $28.29 |
| Diesel | $5.41 | $16.83 | $33.66 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Idaho · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.